This lovely card catalog is hiding something very unusual. Can you guess what it is? We'll give you two hints: It's liquid and would never be allowed in a library. Follow the jump to see the answer...

It's a make-shift wine cellar!

AT Boston reader Arlene emailed us back in December with this great find after reading our post about antique card catalogs on Etsy. She spotted it on a sommelier blog where they purchased an old card catalog but then struggled over what to fill it with. Eventually they discovered the drawers were just wide and long enough to fit one bottle of wine, each.

They are the first to admit this is no way to age wine — they only buy what they can drink within a month so this is the perfect storage solution for them. We might go as far as to make labels (Pinot Noir, Shiraz, Cabernet...) but they say figuring out where they put which bottle is all part of the fun. If this was in our kitchen, we might also fill the drawers with bottles of dry herbs and spices, extra dish towels, and utensils.